GB1402530A - Detecting damage to glass - Google Patents

Detecting damage to glass

Info

Publication number
GB1402530A
GB1402530A GB5759871A GB5759871A GB1402530A GB 1402530 A GB1402530 A GB 1402530A GB 5759871 A GB5759871 A GB 5759871A GB 5759871 A GB5759871 A GB 5759871A GB 1402530 A GB1402530 A GB 1402530A
Authority
GB
United Kingdom
Prior art keywords
output
signals
trigger
glass
integrator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5759871A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microwave and Electronic Systems Ltd
Original Assignee
Microwave and Electronic Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Microwave and Electronic Systems Ltd filed Critical Microwave and Electronic Systems Ltd
Priority to GB5759871A priority Critical patent/GB1402530A/en
Priority to ZA728609A priority patent/ZA728609B/xx
Priority to AU49785/72A priority patent/AU478140B2/en
Priority to IT70863/72A priority patent/IT975986B/it
Priority to FR7243716A priority patent/FR2162577B1/fr
Priority to DE2260352A priority patent/DE2260352C2/de
Priority to JP12351172A priority patent/JPS563598B2/ja
Publication of GB1402530A publication Critical patent/GB1402530A/en
Priority to US05/677,645 priority patent/US4054867A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB5759871A 1971-12-10 1971-12-10 Detecting damage to glass Expired GB1402530A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB5759871A GB1402530A (en) 1971-12-10 1971-12-10 Detecting damage to glass
ZA728609A ZA728609B (en) 1971-12-10 1972-12-05 Detecting damage to bulk material
AU49785/72A AU478140B2 (en) 1971-12-10 1972-12-07 Detecting damage to glass
IT70863/72A IT975986B (it) 1971-12-10 1972-12-07 Dispositivo rivelatore di lesioni in un materiale conduttore di fre quenze ultrasconiche particolarmente per sistemi d allarme
FR7243716A FR2162577B1 (fr) 1971-12-10 1972-12-08
DE2260352A DE2260352C2 (de) 1971-12-10 1972-12-09 Vorrichtung zur Feststellung der Beschädigung von Glasscheiben oder ähnlichem
JP12351172A JPS563598B2 (fr) 1971-12-10 1972-12-11
US05/677,645 US4054867A (en) 1971-12-10 1976-04-16 Detecting damage to bulk material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5759871A GB1402530A (en) 1971-12-10 1971-12-10 Detecting damage to glass

Publications (1)

Publication Number Publication Date
GB1402530A true GB1402530A (en) 1975-08-13

Family

ID=10479560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5759871A Expired GB1402530A (en) 1971-12-10 1971-12-10 Detecting damage to glass

Country Status (6)

Country Link
JP (1) JPS563598B2 (fr)
DE (1) DE2260352C2 (fr)
FR (1) FR2162577B1 (fr)
GB (1) GB1402530A (fr)
IT (1) IT975986B (fr)
ZA (1) ZA728609B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091660A (en) * 1977-03-16 1978-05-30 Matsushita Electric Industrial Co., Ltd. Apparatus for detecting the breaking of a glass plate
GB2129592A (en) * 1982-07-02 1984-05-16 Paul Coleman Motion sensor
US5229748A (en) * 1989-04-12 1993-07-20 Siemens Aktiengesellschaft Monitoring system for monitoring the window panes of an interior, for example a motor vehicle interior
GB2348496A (en) * 1999-03-31 2000-10-04 Frazer Nash Consultancy Ltd Method and apparatus for the detection of scratching and similar surface action to glass
WO2022112761A1 (fr) * 2020-11-24 2022-06-02 Novosound Ltd Dispositif ultrasonore et procédé

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2254540C3 (de) * 1972-11-08 1981-06-04 Wilhelm 6700 Ludwigshafen Karger Schaltungsanordnung für einen Schwingungsmelder für Ruhestrom-Alarm-Anlagen
JPS5068687U (fr) * 1973-10-26 1975-06-19
JPS50130398A (fr) * 1974-03-30 1975-10-15
JPS5879B2 (ja) * 1975-02-08 1983-01-05 株式会社富士通ゼネラル カンシソウチ
JPS51152349U (fr) * 1975-05-29 1976-12-04
JPS584397B2 (ja) * 1975-09-11 1983-01-26 株式会社富士通ゼネラル カンシソウチ
JPS5265489U (fr) * 1975-11-11 1977-05-14
DE3043912A1 (de) * 1980-11-21 1982-07-01 alfasystem GmbH Vertrieb von elektronischen Sicherheitssystemen, 8034 Germering Glasbruchmelder mit abgesetzter auswerteelektronik
DE3142705C2 (de) * 1981-10-28 1986-06-12 Securiton AG, Zollikofen, Bern Vorrichtung zur Überwachung des Zustandes eines zur Fortleitung von Schallwellen geeigneten Körpers
CN108242122A (zh) * 2016-12-23 2018-07-03 浙江金徕镀膜有限公司 一种用于清理切磨导致破碎的玻璃的报警装置
CN113203800B (zh) * 2021-05-25 2022-11-18 江苏大学 一种用于叉指式换能器的性能标定装置及标定方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627038A (en) * 1946-11-09 1949-07-26 Ferranti Ltd Improvements in means for detecting mechanical vibrations caused by friction
GB1186044A (en) * 1967-04-25 1970-04-02 Electronic Lab Ltd Formerly El Alarm Circuit
DE2127562B2 (de) * 1971-06-03 1979-05-23 Spirig, Ernst, Dipl.-Ing., Rapperswil (Schweiz) Vorrichtung zur Anzeige von Glasscheibenbruch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091660A (en) * 1977-03-16 1978-05-30 Matsushita Electric Industrial Co., Ltd. Apparatus for detecting the breaking of a glass plate
GB2129592A (en) * 1982-07-02 1984-05-16 Paul Coleman Motion sensor
US5229748A (en) * 1989-04-12 1993-07-20 Siemens Aktiengesellschaft Monitoring system for monitoring the window panes of an interior, for example a motor vehicle interior
GB2348496A (en) * 1999-03-31 2000-10-04 Frazer Nash Consultancy Ltd Method and apparatus for the detection of scratching and similar surface action to glass
WO2022112761A1 (fr) * 2020-11-24 2022-06-02 Novosound Ltd Dispositif ultrasonore et procédé

Also Published As

Publication number Publication date
AU4978572A (en) 1974-06-13
JPS563598B2 (fr) 1981-01-26
ZA728609B (en) 1973-08-29
JPS4866485A (fr) 1973-09-12
FR2162577A1 (fr) 1973-07-20
DE2260352C2 (de) 1985-01-17
IT975986B (it) 1974-08-10
DE2260352A1 (de) 1973-06-28
FR2162577B1 (fr) 1980-07-25

Similar Documents

Publication Publication Date Title
GB1402530A (en) Detecting damage to glass
US4054867A (en) Detecting damage to bulk material
US3755803A (en) Electronic surveillance system
GB1517628A (en) Method of and apparatus for supervising accoustically conductive media
JPS5523476A (en) Detection circuit device for ultrasonic propagation time
GB1386223A (en) Ultrasonic microwave doppler intrusion alarm system
GB1268640A (en) Acoustic detection apparatus
GB1436025A (en) Breakage detector
GB1520096A (en) Method of and apparatus for detecting damage to frangible objects
GB1531827A (en) Alarm system for detecting disturbance of a solid medium
GB1357329A (en) Detection apparatus
ES310667A1 (es) Aparato para examinar una formaciën geolëgica
GB1420043A (en) Method and apparatus for providing space security
US3569924A (en) Ultrasonic detection system
ES475710A1 (es) Un aparato para detectar y situar emisiones acusticas desde un origen de una descarga en corona, y un metodo correspon- diente
US4112420A (en) Apparatus for detecting the breakage of an acoustically conductive medium
GB1319092A (en) Ultrasonic motion detector device and method
GB1308702A (en) Intrusion detection apparatus having supervisory control means
JPS5793271A (en) Trouble detector in ultrasonic device
JPS5525284A (en) Mfb speaker system
JPS5784375A (en) Failure detector for supersonic device
GB1242404A (en) Improved alarm device
GB1602441A (en) Detector
FR2331848A1 (fr) Procede et dispositif pour la surveillance des parois vitrees et analogues
JPS5764126A (en) Oscillation detecting apparatus

Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19921207